Zobrazeno 1 - 10
of 42
pro vyhledávání: '"I. Rosales-Candelas"'
Publikováno v:
Journal of Spectroscopy, Vol 2023 (2023)
This work presents the results by irradiating fresh Portland cement pastes with CO2 laser, at powers of 1.6, 2.0, and 2.4 W, at different water-to-cement (w/c) ratios 0.4, 0.45, and 0.5. Raman spectra show the evolution and accelerated growth of the
Externí odkaz:
https://doaj.org/article/821e89334ca14a56ac8b0ad4151246c2
Publikováno v:
International Journal of Polymer Science, Vol 2018 (2018)
Thermooxidation of LDPE films by CO2 laser radiation, 10.6 μm, was characterized by Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR). The formation of carbonyl and hydroxyl functional groups onto LDPE films was de
Externí odkaz:
https://doaj.org/article/45e7522122ac4c838fb9e82563ffcfd8
Publikováno v:
Journal of Spectroscopy, Vol 2017 (2017)
Externí odkaz:
https://doaj.org/article/c1235c0a37b34c15bd566712240104b8
Publikováno v:
Journal of Spectroscopy, Vol 2015 (2015)
The changes in structural properties of high density polyethylene films (HDPE), low density polyethylene films (LDPE), biodegradable polyethylene (PE-BIO), and oxodegradable polyethylene (PE-OXO) films exposed to UV-B radiation were studied. The carb
Externí odkaz:
https://doaj.org/article/d7d4eb93265a4fc1856a79ce1ec4b3d4
Akademický článek
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Akademický článek
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Publikováno v:
Latin America Optics and Photonics Conference.
The effects of UV-B radiation in samples of HDPE and LDPE were characterized using infrared Spectroscopy. UV-B radiation causes the formation of fotodegradation products like vinyl and carbonyl groups.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58ef35ccc3cb6981c511d945f1ce4b62
https://doi.org/10.1364/laop.2014.lth4a.36
https://doi.org/10.1364/laop.2014.lth4a.36
Autor:
S. P. Calero Marín, Rosario González-Mota, R. Moreno-Virgen, J. T. Vega-Durán, I. Rosales-Candelas, J. J. Soto-Bernal
Publikováno v:
SPIE Proceedings.
In this work we quantified the effective UV radiation dose in orange and colorless polyethylene samples exposed to weather in the city of Aguascalientes, Ags. Mexico. The spectral distribution of solar radiation was calculated using SMART 2.9.5.; the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13f62c46ab17a669262e6a8fdbef0e57
https://doi.org/10.1117/12.848953
https://doi.org/10.1117/12.848953
Autor:
I. Rosales-Candelas, J. J. Soto-Bernal, Rosario González Mota, A. Bonilla-Petriciolet, J. T. Vega-Durán
Publikováno v:
SPIE Proceedings.
This work carries out a simulation of the absorption spectra on the IR of an untinted textile fiber manufactured with polyacrylonitrile (PAN), obtained by calculating the Molecular Orbitals (MOs) and their associated energies based on the semiempiric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::621a9c0d178777c1897f365254f86e03
https://doi.org/10.1117/12.742351
https://doi.org/10.1117/12.742351
Publikováno v:
SPIE Proceedings.
This work presents an experimental study of the appearance of redness on the surface of the eye on PC users due to the exposition to low frequency electromagnetic fields LF, VLF and ELF that VDTs with TRC monitors radiate, based on the measurement of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12e2b4e0bfbacbd7bb40593940b042f7
https://doi.org/10.1117/12.742276
https://doi.org/10.1117/12.742276